Question about 1990 Chevrolet Lumina APV

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The radiator fan in chevy lumina apv 90 start at high temp, what can i do to calibrate it, at lower temp.?

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You can try replacing the engine coolant temp sensor, it may be off a bit.
Ask your Chevy dealer service writer if there is a service bulletin for a reflash of the engine computer which controls when the fan comes on based on info from the temp sensor.

Posted on May 08, 2010

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